. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. SOUTHERN CALIFORNIA ACADEMY OF SCIENCES Diatoms By Miss Sarah P. Monks. Diatoms are organisms that have characteristics of both plants and animals. Unlike other plants they have the power of voluntary motion, and, unlike most animals, they possess chlorophyll. They are microscopic. Zoologists look at them askance and botanists do not want them, but they are the pets of the microscopist, and well they. Fig. 1. Aiachnoidiscus Mag. 300 Diam. Micro Photograph by S. J. Keese deserve this honor, for
. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. SOUTHERN CALIFORNIA ACADEMY OF SCIENCES Diatoms By Miss Sarah P. Monks. Diatoms are organisms that have characteristics of both plants and animals. Unlike other plants they have the power of voluntary motion, and, unlike most animals, they possess chlorophyll. They are microscopic. Zoologists look at them askance and botanists do not want them, but they are the pets of the microscopist, and well they. Fig. 1. Aiachnoidiscus Mag. 300 Diam. Micro Photograph by S. J. Keese deserve this honor, for they are among the most exquisitely beautiful objects of the world. They, unlike plants, have a silica shell composed of two valves, one fitting over the other like the lid of a pill box. These glassy valves are decorated with knobs, points and striae, arranged in the most varied and delicate tracery. Some- times under a low micro power, diatoms appear changeable, blue, green and various colors, because their tiny projections break the white light into its rainbow tints. Diatoms are at present, classed as brown alga?, or sea weeds, on account of the dark brown pigment under their siliceous shell. An interesting fact in regard to color was noticed by the Russian diatomologist, C. Mereschowsky, among the recent. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Southern California Academy of Sciences. Los Angeles, Calif. : The Academy
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